What are the four basic types of magma compositions, and how do they differ in their respective abundance of silica, iron, and magnesium?
What will be an ideal response?
Felsic: highest silica content, lowest Fe-Mg content
Intermediate; medium silica content; medium Fe-Mg content
Mafic: low silica content; high in Fe-Mg content
Ultramafic: lowest silica content; highest Fe-Mg content
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Which of the following factors favors movement of a rock slide?
A) Layers that are inclined opposite to the slope of the hill B) Solid rock with few preexisting joints or faults C) A massive rock with no bedding or other through-going discontinuities D) A valley or other open space downslope from the rock slide
Rainfall in mountain ranges might impact people living nearby by
A. increasing flooding hazards. B. increasing mudslide hazards. C. increasing erosion in mountains. D. water flowing into streams and rivers, increasing water supply. E. All of these choices are correct.
What is dollarization and how has it recently affected the economy of specific Latin American countries? Also, what are preventive measures that some of these countries are taking to avoid problems associated with this phenomenon?
What will be an ideal response?
Which element is present in heparin but not in hyaluronic acid?
A) N B) P C) S D) none of these